Question

Digital modulation scheme fall into one of the two classes with opposite behavior characteristics: orthogonal signaling, and phase/amplitude signaling. Describe the behavior of each class in detail. Also justify amplitude or phase –shift keying is visualized as a constellation of points or phasors on a plane, why can’t we use a similarly simple visualization for orthogonal signaling such as FSK?​

Answer 1

Answer:

Digital modulation scheme fall into one of the two classes with opposite behavior characteristics: orthogonal signaling, and phase/amplitude signaling. Describe the behavior of each class in detail. Also justify amplitude or phase –shift keying is visualized as a constellation of points or phasors on a plane, why can’t we use a similarly simple visualization for orthogonal signaling such as FSK?